In Mass Effect 2 for Xbox 360, there are quite a few side quests that can be found by scanning planets for anomalies. Here is a list of locations where you can find these anomalies.
Caleston Rift Cluster – Solveig System – Sinmara
Caleston Rift Cluster – Talava System – Taitus
Crescent Nebula Cluster – Lusarn System – Tarith
Crescent Nebula Cluster- Zelene System – Helyme
Eagle Nebula Cluster – Amun System – Neith
Eagle Nebula Cluster – Strabo System – Jarrahe Station
Hades Nexus Cluster – Sheol System – Gei Hin
HourGlass Nebula Cluster – Faryar System – Daratar
HourGlass Nebula Cluster – Ploitari System – Zanethu
Minos Wasteland Cluster – Fortis System – Aequitas
Omega Nebula Cluster – Ariniarkan System – MSV Strontium Mule
Omega Nebula Cluster – Fathar System – Lorek
Pylos Nebula Cluster – Dirada System – Canalus
Pylos Nebula Cluster – Nariph System – MSV Broken Arrow
Rosetta Nebula Cluster – Enoch System – Joab
Sigurd’s Cradle Cluster – Decoris System – Sanctum
Sigurd’s Cradle Cluster – Skepsis System – Franklin
The Shrike Nebula Cluster – Xe Cha System – Zada Ban
Titan Nebula Cluster – Haskins System – Capek
